Detainees were regularly executed and unarmed people killed in their sleep during night raids, according to ex-soldiers.
The latest attacks come as the African Union rejects any 'interference' in the civil war, which has killed over 20,000.
Tidjane Thiam's campaign has been halted because presidential candidates are not allowed to hold dual citizenship.
The Kurdistan Workers’ Party, or PKK, has announced that it plans to disband and disarm.